Speculum



March 15, 1932. w. N. ALLYN 1,849,7O1

SPECULUM Filed Nov. 29, 1929 J INVE 701? flr v Arro NEYJ Patented Mar. lti, 11932 PATENT OFFCE SPECULUE Application filed November 28, 1929. Serial No. 410579.

This invention relates to a surgical instrument adapted to be used by physicians, surgeons and others skilled in the art of diagnosing and treating abnormal conditions of Certain internal organs of the human or animal anatomy and refers more particularly to a speeulum attachment for endoscopes including urethroscopes, Otoscopes, anuscopes and analogous instruments similar to the class setforth in my ending application, Serial NO. 226.726, filed, October 17, 1927, and also in my Patent No. 1,712,866, May 14, 1929.

In instruments of this character it is customary to use a lamp case containing a small but. powerful incandescent electric lamp which is detachably lnounted upon a batterycontaining handle having means, including an electric switch, for Controlling the lanlp circuit, the lamp being mounted within the case and arranged to project its rays of light through one end thereof while the Other end of the Case is provided with a suitable lens, movable into and out of registration with the opening therethrough so that when closed the illuminated part Or Object may be visually magnified.

These instruments are usually constructed in many different forms and sizes according to the nature of the Organ under examination or treatment and frequently require the use of lenses of widely difiering magnifying power adapted to be used in place of the standardized lens with which the instrument is furnished.

The main object of the present invention is to permit the use of widely varying specula upon One and the same lamp case and also to permit the use of different lenses in connection with any one of the specula according to the nature of the Organ under examination or treatment thereby avoiding the necessity for separate complete instruments for the different kinds of work.

Other objects and uses relating to specific parts of the implement Will be brought out in the following description.

ln the drawingsz Figure 1 is a side elevation of a battery handle and lamp Case detachably coupled thereto together With my improved speculum attachment in operative position upon the lamp case.

Figure 2 is a face View of the upper portion of the same instrument at right angles to that shown in Figure 1, the lens holder on the lamp case being shown by dotted lines in its inoperative position while the lens holder On the speculum attachment is shown by full lines in its inoperative position and by dotted lines in its operative position.

Figure 3 is a det-ail Vertical sectional view taken in the plane of line 3-3, Fig. 1, a portion of the specululn tube being broken away and the battery handle omitted.

Figure l is a erspective View of the detached speculum With the lens in operative position.

In order that my invention may be clearly understood I have shown a battery-containing handle --1- and a tubular lamp Case -2- detachably connected to one end of the battery handle by means of a coupling having One of its sections as -3'- secured in an opening in One side of the lamp Case for receiving and supporting an incandescent electric lamp --4nas shown in Figure 3.

The lamp -4- is connected to the battery within the handle 1- through the medium of an electric switch which is adapted to be operated by a hand Wheel or disk' 5- on the head -6- of the battery case, said case being provided With a removable base 7 to permit the insertion and removal of the battery.

The coupling sections -3'.- extends radially into the lamp case --2-- a distance slightly less than the radus of the case while the lamp -4- is secured to the inner end of the section -3- to extend forwardly substantially parallel with and at one side of the axis of the case so as to project its rays forwardly through the speculum presently described.

A circular lens-supporting rame or bezel '-8-- is pivoted at -9- to the rear end face of the lamp case -2- for receiving and supporting a magnifying lens -10- Which, together With the frame -9-, is adapted to swing transversely to and from a position across the adjacent end of the case so that when in its closed position it will magnify the illuminated object at the opposite end of the lamp case.

The end of the case -2-- adjacent the eir- Cular frame -9-- is provided With a radially projecting detent -l 1- having a groove in its inner face for receiving the adjacent portion of the fraine -8-- and thereby holding the trame and lens against axial displacement when adjusted for use, said detent being preferably arranged diametrically opposite the coupling section -3'- as shown in Figure 8.

The parts thus far described are quite similar to those shown in my Patent No. 1,712,- 866, previously referred to, and therefore need not be further illustrated or described.

The speeulum attaehinent ferming the subject matter of this application, individnally and in combination with the lamp case comprises a tuhular head -12- having a reduced rear end -13 of approximately the same external diameter as the internal diameter of the front end of the larnp case 2- for telescopic engagement there-with, the front end of the head being tapered at -1-tand provided with a reduced cylindrical extension -l5 having its front end face -ltidisposed in a plane oblique to its :ixis with the longer side at the bottom or at the same side the coupling section -3'-, the interior walls of the head -12- and its extensions 13--, -14- and -15 being comparatively smooth and may, if neecssai'y, be coated with an opaque material to facilitate the direct projection of the rays of li ht from the lamp -ltherethrough.

l'he head -12- is provided atits junetion with the reduced portion -l3 with an annular fiange or ring -17-- which. is preferahly made separate from, butis permanently secured to the outer end of the reduced portion --13- and against the shoulder at said junction to hold it against axial movemont.

This ring -17-- is provided With a radially projecting arm -18- extending some (listance beyond the periphery ot the lens-supporting trame -8- and its detent -11- for reeeiving and supporting a rearwardly projecting bearing 19- having its front end riveted or otherwise secured to the outer end of the arm -18-- and its other end extended rearwardly beyond the rear end face of the frznne -8 and detent -11- and provided with a socltet -20- for receiving a lens holder -21 This lens holder comprises a pivotal pin -52'2- which is rotatable and slidable endwise in the socket -20- and Carries at its rear end a radially projecting arm -23- which is secured to the rear end of the pivotal pin 22- for rotary and axial movement therewith.

The arm -23- is provided with an opening --24- for receiving a n'iagnifying lens -25- having its axis distance from the axis of the pivotal pin -22 Corresponding to the distance between the axis of the pivotal pn and the axis of the lamp case -2 so that when adjusted for use the lens -2z' will be eo-axial with the axis of the lamp case and therefore slightly above the plane in which the lamp -4- is located.

The axis of the pivotal pin -22- is parallel With that ot the lamp Case -2- while the arm -23- is disposed at right angles to the axis of the pivotal pin 22-- to permit it, together with the lens -25-, to be swung laterally to and from a position across the rear end of the lamp case or from its operatiVe position, as shown in Figure 3, to its inoperative position as shown in Figure :2.

The purpose of this transverse swinging movement of the lens holder to permit the lens to be positioned exactly Co-axial With the lamp case and also to permit the speculum to be placed in operative position and removed when the arm -23- is adjusted to position as shown in Figure 2 at which time the entire speculum may be removed or replaced by axial movement in reverse directions.

The purpose of the sliding adjustment of the lens holder in the sooket --20- is to permit its lens to be properly focused upon the object 'at the distul end of the tubular extension -15- but it is obvious that it may be entirely removed from the bearing -19 by forward displacement which would also permit the speculum as a unit to he removed and replaced Without any swinging movement of the arm -23- from its operative position; shown in Figure 3.

It is now evident thatthe speculum attachment shown may be easily and quickly removed and replaced by others upon the same lamp case according to the nature of the work under examination or treatment.

O peration lVhen it is desired to remove the speculum from the lamp ease it is simply necessary to swing the lens-supporting arm *23- from its operative position, shown in Figure 3, to approximately the position shown in Figure 2 and then to withdraw the speculum forwardly from the lamp case, the replacement of the same speculum or a different one being accomplished by reversing the movements described.

l l 'hen the speeulum is placed in operative position, as shown in Figures 1 and 3, the lens-supporting frame -S- with the lens 10- thereon will he rocked laterally about its pivot -9-- sufiiciently to establish a clear and unobstructed view through the lamp case and speculum from the rear end forwardly after which the arm -23- Carrying the lens -2: will be moved to its operative position, shown in Figure 3, with its sms coaxial With the axisof the lamp case --2-- and tubular members -12-- and -15-.

The switch Operating member --5-- may then be adjusted to close the lamp circuit and thereby cause the light rays from the lamp to be projected forwardly through the tubular portions 12- and -15 for illuminating the interior of the particular Organ into Which the extension --l5-- is inserted.

The lens-supporting arm -23-- may then be adjusted axially to its lens to be properly focused upon the object under examination, the axial adjustment of the lens holder --21-- depending upon the distance of the distal end of the speculum from the source of light.

It is, of course, understood that the diameter of the lamp case for the several instruments Will be standardized Which not Only permits the particular speculum shown to be used upon any of the lamp cases but also permits difierent forms of specula to be used upon one and the same lamp case.

The instrument shown and described, including the speculum, is particularly eflicient in the examination and treatment of a great many difierent anatomical organs but it is oh- Vious that many changes may be made in the detail construction and arrangement of the battery handle, lamp case and coupling', and also in the construction of the speculum may be made without departing from the spirit of this invention.

What I claim is In a speculum, the combination With a tubular lamp case having a reduced tubular extension on one end, a radial coupling member intermediate its ends for attachment to a battery handle and extended into the lamp case, and a lamp socket secured to the inner end of the coupling member and extended toward said reduced end parallel With the axis of the lamp case, of a lens holder pivoted to the other end of the iamp case to swing to and from a position across the adjacent end of the lamp case, a tubular guide mounted upon the exterior of the lamp case and extended parallel with said axis heyond said lens holder, and a second lens holder journaled in said guide for angular movement to and from a position across the outer face of the 'first lens-holder and also movable axially in said guide toward and from the first lens holder.

In witness whereof have hereunto set my hand this 19th day of November, 1929.

LIAM N. ALLYN. 

